GB2329076A - Plastic brushless direct current disk-shaped electric motor - Google Patents

Plastic brushless direct current disk-shaped electric motor

Info

Publication number
GB2329076A
GB2329076A GB9820257A GB9820257A GB2329076A GB 2329076 A GB2329076 A GB 2329076A GB 9820257 A GB9820257 A GB 9820257A GB 9820257 A GB9820257 A GB 9820257A GB 2329076 A GB2329076 A GB 2329076A
Authority
GB
United Kingdom
Prior art keywords
plastic
disk
electric motor
direct current
brushless direct
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
GB9820257A
Other versions
GB9820257D0 (en
GB2329076B (en
Inventor
Peter Bruce Clark
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Cadac Ltd
Original Assignee
Cadac Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Cadac Ltd filed Critical Cadac Ltd
Priority claimed from PCT/NZ1996/000089 external-priority patent/WO1997008805A1/en
Publication of GB9820257D0 publication Critical patent/GB9820257D0/en
Publication of GB2329076A publication Critical patent/GB2329076A/en
Application granted granted Critical
Publication of GB2329076B publication Critical patent/GB2329076B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/46—Fastening of windings on the stator or rotor structure
    • H02K3/47—Air-gap windings, i.e. iron-free windings
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22—Rotating parts of the magnetic circuit
    • H02K1/27—Rotor cores with permanent magnets
    • H02K1/2793—Rotors axially facing stators
    • H02K1/2795—Rotors axially facing stators the rotor consisting of two or more circumferentially positioned magnets
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/12—Stationary parts of the magnetic circuit
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/12—Stationary parts of the magnetic circuit
    • H02K1/18—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures
    • H02K1/182—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures to stators axially facing the rotor, i.e. with axial or conical air gap
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K29/00—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices
    • H02K29/06—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with position sensing devices
    • H02K29/08—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with position sensing devices using magnetic effect devices, e.g. Hall-plates, magneto-resistors
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2237/00—Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
    • C04B2237/30—Composition of layers of ceramic laminates or of ceramic or metallic articles to be joined by heating, e.g. Si substrates
    • C04B2237/32—Ceramic
    • C04B2237/36—Non-oxidic
    • C04B2237/366—Aluminium nitride
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
    • H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
    • H02K21/24—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets axially facing the armatures, e.g. hub-type cycle dynamos

Abstract

A disk shaped brushless direct current electric motor has a plastic stator disk (201) and a plastic rotor disk. The plastic stator disk (201) has an annular cavity on one face retaining a spiral coil (305) of thin lamination steel and a plurality of radial fingers on the opposite face to support conductive windings (206). The plastic rotor disk contains and supports a backing plate of mild steel (101) attached to a central shaft (3031. An annular ring magnet (102) is attached to the steel backing plate. The annular ring magnet has from 4 to 24 permanent magnetic poles; preferably eight poles.
GB9820257A 1995-08-31 1996-08-30 Plastic brushless direct current disk-shaped electric motor Expired - Fee Related GB2329076B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NZ27290695 1995-08-31
PCT/NZ1996/000089 WO1997008805A1 (en) 1994-01-28 1996-08-30 Plastic brushless direct current disk-shaped electric motor

Publications (3)

Publication Number Publication Date
GB9820257D0 GB9820257D0 (en) 1998-11-11
GB2329076A true GB2329076A (en) 1999-03-10
GB2329076B GB2329076B (en) 2000-02-23

Family

ID=19925408

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9820257A Expired - Fee Related GB2329076B (en) 1995-08-31 1996-08-30 Plastic brushless direct current disk-shaped electric motor

Country Status (7)

Country Link
AR (1) AR003382A1 (en)
AU (1) AU6891196A (en)
CA (1) CA2242198A1 (en)
GB (1) GB2329076B (en)
IN (1) IN188948B (en)
MY (1) MY127667A (en)
TW (1) TW309673B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009121760A1 (en) * 2008-04-03 2009-10-08 Robert Bosch Gmbh Electric machine

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI413346B (en) * 2010-03-25 2013-10-21 Sunonwealth Electr Mach Ind Co Fan case
TWI629231B (en) * 2013-10-04 2018-07-11 醫電鼎眾股份有限公司 Cord reel with function of calculating cable length

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4167692A (en) * 1976-11-01 1979-09-11 Sony Corporation Brush-less DC motor
US4633149A (en) * 1985-09-10 1986-12-30 Buehler Products, Inc. Brushless DC motor
DE3736033A1 (en) * 1986-10-25 1988-04-28 Papst Motoren Gmbh & Co Kg DC motor which has a disc-shaped rotor but no commutator
GB2202387A (en) * 1987-03-11 1988-09-21 Sony Corp Dc motor bearing arrangement
US4836631A (en) * 1985-07-23 1989-06-06 Kanegafuchi Chemical Industry Co., Ltd. Laser scanning motor having a rotating polygonal mirror and method of manufacturing the same
AU585863B2 (en) * 1984-06-12 1989-06-29 Maghemite Inc. Dynamoelectric machine
WO1994019859A1 (en) * 1993-02-17 1994-09-01 Cadac Holdings Limited Discoidal dynamo-electric machine

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4167692A (en) * 1976-11-01 1979-09-11 Sony Corporation Brush-less DC motor
AU585863B2 (en) * 1984-06-12 1989-06-29 Maghemite Inc. Dynamoelectric machine
US4836631A (en) * 1985-07-23 1989-06-06 Kanegafuchi Chemical Industry Co., Ltd. Laser scanning motor having a rotating polygonal mirror and method of manufacturing the same
US4633149A (en) * 1985-09-10 1986-12-30 Buehler Products, Inc. Brushless DC motor
DE3736033A1 (en) * 1986-10-25 1988-04-28 Papst Motoren Gmbh & Co Kg DC motor which has a disc-shaped rotor but no commutator
GB2202387A (en) * 1987-03-11 1988-09-21 Sony Corp Dc motor bearing arrangement
WO1994019859A1 (en) * 1993-02-17 1994-09-01 Cadac Holdings Limited Discoidal dynamo-electric machine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009121760A1 (en) * 2008-04-03 2009-10-08 Robert Bosch Gmbh Electric machine

Also Published As

Publication number Publication date
CA2242198A1 (en) 1997-03-06
AU6891196A (en) 1997-03-19
IN188948B (en) 2002-11-30
MY127667A (en) 2006-12-29
GB9820257D0 (en) 1998-11-11
TW309673B (en) 1997-07-01
GB2329076B (en) 2000-02-23
AR003382A1 (en) 1998-07-08

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20120830